Stars’ Favorite Workout Moves

Stars’ Favorite Workout Moves

Madonna's core is tighter than a teen's. Her secret weapon: a towel. She and trainer Nicole Winhoffer use one for high-intensity workouts to make muscles work harder and nix floor-work friction. Try this move to reach those hard-to-target obliques. As the superstar sings, Gimme all your love ... handles.

Lie on left side on a smooth surface, with knees bent and left forearm on a towel supporting upper body, right fingertips on floor in front of you for balance. Slowly slide towel forward until left arm extends almost fully but torso isn't touching floor (as shown), then reverse move to return to start. Do 15 reps, then switch sides.